Finding the Fourth Proportional to 1,060.71, 1,463.40 and 641.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,060.71 : 1,463.40 = 641.18 : x
2. Step 2: Convert to fraction form
   1,060.71/1,463.40 = 641.18/x
3. Step 3: Cross multiply
   1,060.71x = 1,463.40 × 641.18
4. Step 4: Simplify right side
   1,060.71x = 938,295.50
5. Step 5: Solve for x
   x = 938,295.50/1,060.71
6. Step 6: Final answer
   x = 884.59